Lintian tag information: openpgp-file-has-implementation-specific-extension (type: pedantic)

Description (from lintian-explain-tags)

The package includes an OpenPGP file with an implementation specific
extension such as .gpg, instead of the more correct and neutral .pgp.

The specification for this format is called OpenPGP, and the extension
name that is short and considered implementation neutral is .pgp. While
currently the GnuPG project is widely used and one of the most known
OpenPGP implementations, using an extension after its name is detrimental
to other alternative implementations, when a better more neutral name can
be used instead.

Note that many of these files are referenced externally, and as such
should be considered an interface. Make sure to create backward
compatibility symlinks for a smooth transition.

Please refer to https://www.openpgp.org/ and
https://www.rfc-editor.org/rfc/rfc4880 for details.

Visibility: pedantic
Show-Always: no
Check: files/openpgp

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